Multiple boring-machine



(No Model.) 3 SheetsShet 1,

W. W. GREEN.v

I MULTIPLE BORING MACHINE. No. 596,772. Patented Jan. 4, 1898.

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Patented Jan. 4,1898.

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W'ILLIAM XV. GREEN, OF CHICAGO, ILLINOIS.

MULTIPLE BORING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 596,772, dated January d, 1898.

Application filed September 28, 1893. Serial N0- 486,661. (No model.)

T0 or whom it may concern:

Be it known that I, WILLIAM W. GREEN, a,

citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Multiple Boring-Machine, of which the following is a full, clear, and exact description, which will enable others skilled in the art to which it relates to use the same.

My invention relates more particularly to that character or class of machines which are employed to bore holes at intervals in matched boards or boards adapted to be matched. In producing this character of board the latter is first delivered to a matching-machine which forms on one edge thereof the desired tongue and on the other the groove, and after being thus acted upon is redelivered to a type of machine which. bores the holes on that edge of the board having thetongue thereon, so that the nails may be driven into the board without splitting or otherwise injuring the tongue.

It is my object to provide a multiple boringmachine which shall be capable of automatically, continuously, and successively boring holes in a board, which board is still being operated upon by the matching-machine, the boring-machine being of such design and construction as that its degree of active operation varies with, is proportionate to, and dependent upon,the degree of speed of advancement of the board in the matching-machine, so that as soon as a portion of the board is tongued and grooved the same immediately passes without manual intervention into the boring machine, and the same board is conjointly acted upon by the matching and boring machine at one and the same time.

My invention consists in a bit-carrying member having a movement of its own independent of the driving mechanism, by which each one of a multiplicity of bits are successively brought to a position in which to act in turn upon the board, the movement of the bit-carrying member being derived from the movement of advancement of the board,which latter is fed either by a matching-machine or manually, driving mechanism and intermediate connecting mechanism between the bits and the said driving mechanism by which the bits are rotated, and automatically-engaging devices by which the bits when successively positioned are respectively caused to enter the board and bore the same and automatically released when the operation of boring is effected.

My invention also has for its object such a method of boring the boards at the tongue as that each and the same board is adapted to be nailed along its length at points distant apart of either four, six, eight, or twelve inches,as maybe found necessary or desirable, and consists in boring a succession of holes at the minimum distance apart on each and all of the boards, adjusting the boards in position and then nailingthe same along their length either at the maximum, intermediate, or minimum distances apart, which in each instance other than the minimum distance apart leaves certain of the bored holes unused, thus overcoming the necessity of pro ducing and keeping on hand different characters of boards.

My invention consists, further, in certain details of construction and arrangement of parts about to be particularly described, refercnce being now had to the accompanying drawings, in which Figure l is a side elevation of the complete machine. Fig. 2 is a plan view of the same, all but one of the bits and bit-stocks being removed. Fig. 3 is an enlarged detail view on the line a: m of Fig. 5. Fig. 4c is an enlarged detail plan view of thebit-carrying disk. Fig. 5 is a sectional view on the line 2 y of Fig. at, the bit-carrying disk being shown in a horizontal plane.

The numerals 12, Figs. 1 and 2, designate a supporting-table of any suitable character, in which is journaled the drive-shaft 13 of the machine, said shaft having at one of its ends thc'drive and idler pulleys 14 and 15. Secured to the drive-shaft 13 is a bevel gearwheel 16, meshing with the bevel gear-Wheel 17, which latter is secured to the actuatingshaft 18 bymeans oi the set-screw 19, as shown in Fig. 5, an inner sleeve 20 being provided which surrounds the major portion of the length of the shaft 18, and which is keyed thereto by means of the pin 21, so as to rotate with said shaft. integrally formed with the inner sleeve 20 is a rack-plate 22, about the outer edge of which is formed the rack 23, by

which latter the bevel pinion-wheels 24, secured by the pins 25, Fig. 5, to the bit-stocks 26, are rotated.

The bit-carrying disk 27 is mounted loosely and independently about or upon the shaft 18 as a central axis, and the series of bit-stocks 26, radiating from a common center, are arranged upon the face of said disk 27 and are journaled in the stationary bearing-boxes 28 and the movable bearing-boxes 29.

The pins 25 are extended into longitudinal slots 30 in the bit-stocks 26, so that the latter may be permitted a longitudinal movement independent of the movement of rotation of the pinions 24, while the journal-boxes 29 are so held as to travel over the disk 27 with the longitudinal movement of the bit-stocks.

Secured to the sliding casting 32 is a holding-arm 33, to the outer end of which is bolted the cam-block 34, against the pointed end of which in turn each antifriction-wheel 35 isbrought in the rotation of the disk 27 in the direction of the arrow, Fig. 4.

Collars 37 are provided fixed on the bitstocks 26 and bearing against the movable bearing-boxes 29.

Thesliding casting 32 has form ed therewith the outer sleeve 38, surrounding the inner sleeve 20.

The board fed along either manually or by the matching-machine is held in place by the fingers 39, Fig. 2.

The operation of my device is as follows: When the machine is in motion, the rack 23 is continuously rotated by the shaft 18, in turn continuously rotating the bevel-pinions 24 and the bit-stocks 26, the movement of the rack being entirely independent of the disk 27. Assuming the disk 27 to be rotated in a manner to be described the bit-stock nearest to the stationary cam-block 34 is brought up to the point of the latter and the antifrictionwheel 35 bears against said point and in riding over the cam-face of the block 34 advances longitudinally the bearing-block 29, bit-stock 26, and bit 40 toward the board 41, causing the bit to perform its function by boring a hole in the board at a point near the tongue, as shown in Fig. 5, after which the antifriction-wheel 35, having passed over the cam-face of the block 34, the bearing-block 29, and bit-stock 26, is released. The spring 31 then retracts the bit into a disengaged position by acting upon the bit-stock 26, the collar 37 also drawing the bearing-box 29 and antifriction-wheel 35 into a position to be again acted upon by the camblock 34 when again in turn presented thereto. It is now obvious that each of the bits is brought successively into an operative position and caused to perform its function in borin g the board and then instantly retracted into an inoperative position. The disk 27 is moved rotatively by the feed of the board,which during the act of boring is engaged by each of the bits, and thus the feeding movement longitudinally of the board is converted into a rotation of the disk, which movement of the latter is entirely independent of the movement of any other part of the machine and dependent only upon the degree of speed of the board, so that in this my form of machine it is apparent that the operation of boring is in unison with the operation of matching. In order to adjust the disk and bits relatively to the table, the screw-threaded spindle 42 is rotated by the hand-Wheel on its end,thus moving the sliding casting 32 along the fixed bracket 44, which latter is secured to the table of the machine. The bolts 45, Fig. 3, secured to the sliding casting 32, travel in slots in the fixed bracket 44.

From this description it will be observed that means are provided consisting of yieldin g pressure devices which normally cause the hits to engage the board, and which also causes the bit-carryin g disk to frictionally engage the board and yet permit it to yield in order to admit of boring different widths of board. It will also be observed, by reference to Fig. 1 more particularly, that when no board is being operated upon the bit-carrying disk is caused to engage upon the table-top, there by preventing an y rotation of said disk which occurs or would occur by reason of the movements of the mechanism by which the bits are operated. It is further apparent that any number of the bits may be radially arranged about a common center to bore a series of holes at any desired distance apart.

Since the speed of the matching-machine and that of the boring-machine are the same, the boards may be fed directly from one to the other.

WVhat I claim is I 1. In a multiple boring-machine, abit-carrying member having an independent movement of rotation effected by the longitudinal movement of the board to be acted upon, a plurality of continuously-rotated bits arranged upon the aforesaid member, driving mechanism and intermediate connections between the driving mechanism and the bits whereby the latter are continuously rotated and intermittently-operating means successively advancing the bits into the board and retracting the same when each act of boring is completed.

2. In a multiple boring-machine, a bit-carrying member having an independent movement of rotation effected by the longitudinal movement of the board, a plurality of continuously rotated bits arranged upon the member aforesaid, driving mechanism and intermediate connections between the driving mechanism and the bits whereby the latter are continuously rotated and intermittentlyengaging devices successively advancing the bits into the board and retracting devices withdrawing the same when each act of boring is completed.

3. In a multiple boring-machine, a rotary bit carrying disk having an independent movement, a plurality of continuously-rotated bits arranged radially upon the aforesaid disk, driving mechanism and intermediate connection between the driving mechanism and the bits whereby the latter are operatively rotated, intermittently-engaging devices successively advancing the bits into the board and retracting devices withdrawing the same when the act of boring is completed together with yielding pressure devices frictionally holding the bit-carrying disk against the board being operated upon said yielding pressure devices affording means whereby boards of unequal width may be operated upon.

4. In a multiple boring-machine, a rotary bit carrying disk having an independent movement,a plurality of contin uously-rotated bits arranged radially upon said disk, driving mechanism and intermediate connections between the driving mechanism and the bits whereby the latter are continuously rotated, an engaging cam adapted to advance the bits into the board and yielding pressure devices acting to withdraw the bits when each operation of boring is completed.

5. In a multiple boring-niachine, the combination of a bit-carryin g disk having an independent movement, a plurality of radiallyarranged and continuously-rotated bits, drivin g mechanism and intermediate connections between the driving mechanism and the bits whereby the latter are operatively rotated, a cam so disposed as that each of the bits is caused to ride over the same in the rotation of the disk and to be advanced into the board thereby and yielding pressure devices adapted to withdraw the bits when the act of boring is completed.

(5. In. a multiple boringmachine, the combination of a bit-carrying disk, a plurality of bits radially arranged upon said disk, a driveshaft also constituting the axis of the disk and having a continuous rotation independent thereof, intermediate connections between said drive-shaft and the bits whereby the latter are continuously rotated, anadjustahle cam against which in turn, in the independent rotation of the disk, each one of the bits is brought, and in riding over the same is advanced into the board and yielding pressure devices withdrawing the bits when released by the cam.

7. In a multiple boring-machine the combination of a bit-carrying disk, a plurality of bits radially arranged thereon, driving mechanism and intermediate connections between said driving mechanism and the bits whereby the latter are continuously rotated, an adj ustable cam adapted to advance each of the bits in turn in the independent rotation of the disk, yielding pressure devices adapted to withdraw the said bits and adjusting devices by which the disk and bits maybe moved 'toward and away from the table.

8. In a multiple boring-machine, a rotary bit carrying disk having an independent movement, a plurality of bits arranged upon said disk, driving mechanism and intermediate connections between the driving mechanism and the bits whereby the latterare rotatably operated and means for successively advancing the bits into the board and retracting the same when each act of boring is completed together with yielding pressure devices frictionally holding the disk against the machine-frame when no board is being operated upon which devices yield upon the insertion of a board between said disk and the frame.

In testimony whereof I have hereunto set my hand this 11th day of September, 1893.

WILLIAM WV. GREEN.

Vitnesses:

C. C. BULKLEY, E. D. GREEN. 

